.page-faq {
  --faq-accent: var(--kt-cyan);
  --faq-accent-soft: rgba(53, 240, 200, 0.16);
  display: block;
  color: var(--kt-text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 3.4vw, 40px);
  padding-bottom: clamp(26px, 4vw, 52px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 24px;
  margin-block: 22px 26px;
}

.page-faq .faq-hero__title {
  margin: 10px 0 14px;
  font-family: var(--kt-display);
  font-size: clamp(30px, 4.4vw, 56px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--kt-text);
}

.page-faq .faq-hero__sub {
  margin: 0;
  max-width: 40ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--kt-text-soft);
}

.page-faq .faq-hero__aside {
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius);
  background:
    linear-gradient(158deg, var(--faq-accent-soft), rgba(7, 19, 15, 0) 62%),
    var(--kt-panel);
  padding: 18px 20px 20px;
}

.page-faq .faq-facts {
  margin: 10px 0 0;
  display: grid;
  gap: 11px;
}

.page-faq .faq-facts > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--kt-line);
}

.page-faq .faq-facts > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-facts dt {
  font-size: 13.5px;
  color: var(--kt-muted);
}

.page-faq .faq-facts dd {
  margin: 0;
  font-family: var(--kt-data);
  font-size: 14px;
  color: var(--kt-text);
}

.page-faq .faq-facts .kt-num {
  font-family: var(--kt-data);
  color: var(--kt-cyan);
}

.page-faq .faq-banner {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius-lg);
  background: var(--kt-panel);
  aspect-ratio: 1200 / 420;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding-bottom: clamp(44px, 6vw, 84px);
}

.page-faq .faq-layout {
  display: grid;
  gap: 26px;
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-rail {
  align-self: start;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  color: var(--kt-muted);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  padding: 8px 15px;
  border: 1px solid var(--kt-line);
  border-radius: 999px;
  background: var(--kt-panel);
  color: var(--kt-text-soft);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--kt-cyan-soft);
  color: var(--kt-cyan);
}

.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--kt-cyan-soft);
  outline-offset: 2px;
}

/* ---------- 问答区 ---------- */
.page-faq .faq-block {
  scroll-margin-top: 26px;
}

.page-faq .faq-block + .faq-block {
  margin-top: 42px;
}

.page-faq .faq-block--amber {
  --faq-accent: var(--kt-amber);
  --faq-accent-soft: rgba(242, 169, 59, 0.14);
}

.page-faq .faq-block--violet {
  --faq-accent: var(--kt-violet);
  --faq-accent-soft: rgba(138, 124, 255, 0.14);
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--kt-line);
}

.page-faq .faq-block__idx {
  font-family: var(--kt-data);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--faq-accent);
  flex: none;
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--kt-editorial);
  font-size: clamp(19px, 2.1vw, 25px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--kt-text);
}

.page-faq .faq-block__lead {
  margin: 13px 0 18px;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--kt-muted);
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius-sm);
  background: var(--kt-panel);
  overflow: hidden;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item:hover {
  border-color: var(--faq-accent);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-accent);
  box-shadow: inset 3px 0 0 var(--faq-accent);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--kt-text);
}

.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--kt-cyan-soft);
  outline-offset: -3px;
  border-radius: var(--kt-radius-sm);
}

.page-faq .faq-item__num {
  flex: none;
  padding-top: 3px;
  font-family: var(--kt-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--faq-accent);
}

.page-faq .faq-item__chev {
  flex: none;
  align-self: center;
  margin-left: auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--faq-accent);
  border-bottom: 2px solid var(--faq-accent);
  transform: rotate(45deg);
  transition: transform 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

.page-faq .faq-item[open] .faq-item__chev {
  transform: rotate(-135deg);
}

.page-faq .faq-item__body {
  margin: 0 18px;
  padding: 14px 0 16px;
  border-top: 1px solid var(--kt-line);
  font-size: 15px;
  line-height: 1.78;
  color: var(--kt-text-soft);
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__body p + p {
  margin-top: 12px;
}

.page-faq .faq-item__body .kt-num {
  font-family: var(--kt-data);
  color: var(--kt-cyan);
}

.page-faq .faq-block--amber .faq-item__body .kt-num {
  color: var(--kt-amber);
}

.page-faq .faq-block--violet .faq-item__body .kt-num {
  color: var(--kt-violet);
}

.page-faq .faq-item__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--kt-line);
}

.page-faq .faq-item__foot a {
  font-size: 13.5px;
  color: var(--kt-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 200, 0.28);
  transition: color 160ms ease, border-color 160ms ease;
}

.page-faq .faq-item__foot a:hover,
.page-faq .faq-item__foot a:focus-visible {
  color: var(--kt-cyan-soft);
  border-color: var(--kt-cyan-soft);
}

/* ---------- 图注块 ---------- */
.page-faq .faq-figure {
  display: grid;
  gap: 18px;
  margin: 18px 0 0;
  padding: 18px;
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius);
  background:
    linear-gradient(200deg, rgba(53, 240, 200, 0.07), rgba(7, 19, 15, 0) 58%),
    var(--kt-panel);
}

.page-faq .faq-figure__cap {
  order: 2;
}

.page-faq .faq-figure__cap p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--kt-muted);
}

.page-faq .faq-figure__img {
  order: 1;
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius-sm);
  overflow: hidden;
  aspect-ratio: 720 / 900;
  max-width: 260px;
  background: var(--kt-ink);
}

.page-faq .faq-figure__img img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 边界说明 ---------- */
.page-faq .faq-note {
  margin-top: 40px;
  padding: 20px 22px;
  border: 1px solid var(--kt-line);
  border-left: 3px solid var(--kt-amber);
  border-radius: var(--kt-radius);
  background: var(--kt-panel);
}

.page-faq .faq-note p:last-child {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--kt-text-soft);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: 44px;
    align-items: end;
    margin-block: 26px 34px;
  }

  .page-faq .faq-hero__sub {
    font-size: 16.5px;
  }

  .page-faq .faq-figure {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: center;
    gap: 30px;
    padding: 22px 24px;
  }

  .page-faq .faq-figure__cap {
    order: 1;
  }

  .page-faq .faq-figure__img {
    order: 2;
    max-width: none;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(198px, 238px) minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 30px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    justify-content: flex-start;
    white-space: normal;
    border-radius: var(--kt-radius-sm);
    border-color: transparent;
    background: transparent;
    padding: 9px 14px;
    font-size: 14px;
    position: relative;
  }

  .page-faq .faq-rail__link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 3px;
    height: 0;
    transform: translateY(-50%);
    border-radius: 999px;
    background: var(--kt-cyan);
    transition: height 200ms ease;
  }

  .page-faq .faq-rail__link:hover::before,
  .page-faq .faq-rail__link:focus-visible::before {
    height: 20px;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: rgba(53, 240, 200, 0.06);
    border-color: transparent;
  }

  .page-faq .faq-item__q {
    font-size: 16px;
    padding: 18px 22px;
  }

  .page-faq .faq-item__body {
    margin: 0 22px;
    font-size: 15.5px;
  }

  .page-faq .faq-block__lead {
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__chev,
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__link::before,
  .page-faq .faq-item__foot a {
    transition: none;
  }
}